A ball is thrown vertically upwards from the top of a building from a height 24.5m with an initial velocity of 19.6m/s given g is 9.8m/s
1. The height to which it will rise before returning to ground
2. The velocity which it will straight the ground.
3.total time of journey.
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Answer:
20 second is answer of 1st
40 second is the answer of 2nd
45 seconde is the answer of 3rd
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